From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from zps38.corp.google.com (zps38.corp.google.com [172.25.146.38]) by smtp-out.google.com with ESMTP id m3UDGH6P017746 for ; Wed, 30 Apr 2008 14:16:17 +0100 Received: from fg-out-1718.google.com (fgg16.prod.google.com [10.86.7.16]) by zps38.corp.google.com with ESMTP id m3UDGFlt002910 for ; Wed, 30 Apr 2008 06:16:16 -0700 Received: by fg-out-1718.google.com with SMTP id 16so149957fgg.23 for ; Wed, 30 Apr 2008 06:16:15 -0700 (PDT) Message-ID: Date: Wed, 30 Apr 2008 09:16:15 -0400 From: "Ross Biro" Subject: Re: Page Faults slower in 2.6.25-rc9 than 2.6.23 In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <661de9470804290752w1dc0cfb3k72e81d828a45765e@mail.gmail.com> <48175005.90400@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org Return-Path: To: balbir@linux.vnet.ibm.com Cc: Hugh Dickins , linux-mm@kvack.org, lkml , Kamalesh Babulal List-ID: On Tue, Apr 29, 2008 at 1:00 PM, Ross Biro wrote: > > Aah.. Yes... but I am definitely interested in figuring out the root cause for > > the regression. > > I can't reproduce the 2.6.23 results. I'm going to run the benchmarks > a few more times, but I'm suspecting something changed with the > hardware. The 2.6.23 results have been consistant with 2.6.24 results and lmbench has crashed my test machine at least once. I'm guessing some sort of memory error causing a lot of ECC and slowing things down. Ross -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org